Group 1 - The core viewpoint of the article highlights that Defu Technology has developed ultra-thin high tensile strength copper foil and atomized copper foil products, which can serve as solutions for applications in semi/full solid-state batteries and supercapacitors [2] Group 2 - The company responded to investor inquiries on October 21, indicating its focus on innovative materials for energy storage solutions [2] - The products mentioned are positioned to meet the growing demand in the battery and supercapacitor markets, reflecting the company's strategic direction [2]

Core Viewpoint - Defu Technology (301511.SZ) has developed ultra-thin high tensile strength copper foil and atomized copper foil products, which serve as solutions for semi/full solid-state batteries and supercapacitors, particularly in high energy density applications such as drones [1] Group 1 - The company has achieved mass supply and shipment of copper foil for the drone sector [1]